2,7-Naphthalenedisulfonic acid, 5-((4-((5-chloro-2,6-difluoro-4-pyrimidinyl)amino)benzoyl)amino)-4-hydroxy-3-((2-sulfophenyl)azo)-, trisodium salt 72152-49-9 EINECS 276-403-2 Trisodium 5-((4-((5-chloro-2,6-difluoro-4-pyrimidinyl)amino)benzoyl)amino)-4-hydroxy-3-((2-sulphonatophenyl)azo)naphthalene-2,7-disulphonate